We use the SegFormer-B3 backbone for the Cityscapes segmentation experiments. The SegFormer-B3 backbone is a four-stage architecture which reduces the sequence size and increase the hidden size as you progress through the network. The model is described in more detail in [1]}. More details about how the mixing mechanisms are combined with SegFormer-B3 is described below. All models do not modify the number layers in each stage which is [3, 4, 18, 3].
